The Earth-tree

The entire Earth is a like a huge tree with the roots deep inside and branches protruding from the ground as various countries and nations. The contents of these nations as people, animals, birds, insects, the fauna and flora, the cities and villages, roads, rails, waterways and airways are just made of the clay formed by the fallen leaves and twigs, flowers and fruits forming a dynamic civilization appearing and disappearing in flow of time to a remote observer. We recognise a nation as a distinct integrated entity by defining an artificial boundary, clinging to the trunk or the branch. All branches are similar and unique for a limited time window and hence the equality of all  nations.